Home / 87,912.63-131,867.10-21,353.09

Finding the Fourth Proportional to 87,912.63, 131,867.10 and 21,353.09

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Solution

The fourth proportional to 87,912.63, 131,867.10 and 21,353.09 is: 32,029.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,912.63 : 131,867.10 = 21,353.09 : x
  2. Step 2: Convert to fraction form
    87,912.63/131,867.10 = 21,353.09/x
  3. Step 3: Cross multiply
    87,912.63x = 131,867.10 × 21,353.09
  4. Step 4: Simplify right side
    87,912.63x = 2,815,769,395.00
  5. Step 5: Solve for x
    x = 2,815,769,395.00/87,912.63
  6. Step 6: Final answer
    x = 32,029.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.